Older versions of SuperMemo are successively released as freeware. By purchasing these freeware items you register in the store and become eligible for future upgrades to the newest version of SuperMemo, which are usually 66% cheaper than full-price orders. SuperMemo 7 Freeware sm7$1.00 SuperMemo 8 Freeware sm8$1.00 SuperMemo 9 Freeware sm98$1.00 SuperMemo 10 Freeware sm2000$1.00 SuperMemo 11 Freeware sm2002$1.00 SuperMemo 12 Freeware sm2004$1.00 With SuperMemo you can forget about forgetting!